Answer this question truthfully
### Question: Who is at highest risk for Non-Hodgkin lymphoma ?
### Response: Clinical data has suggested that the development of Non-Hodgkin lymphoma is related to several factors.
Immune system deficiency: People with weakened immune systems, such as people who receive organ transplants or infected with HIV, have an increased risk for non-Hodgkin lymphoma. Autoimmune diseases: Some autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus (SLE), and others have been linked with an increased rate of non-Hodgkin lymphoma. Certain infections such as T-cell leukemia/lymphoma virus (HTLV-1), Epstein-Barr virus (EBV) Exposure of chemicals such as benzene, certain herbicides and insecticides, exposure to radiation Bad life-style: Overweight, obese, diet poor in vegetables. Age: Most cases of Non-Hodgkin lymphoma occur in people older than 60. Gender: Non-Hodgkin lymphoma occurs slightly more often in men than in women. Geography: Worldwide, non-Hodgkin lymphoma is more common in developed countries, with the United States and Europe having the highest rates.